Checking the valve timing (Audi A2)

Remove the high pressure pump. Remove the noise-insulating casing, loosen the fasteners "arrows" to do this. Remove the upper cover of the toothed belt, open the clamps "arrows" to do this. Set the crankshaft in the direction of engine rotation to "TDC". The risk on the pulley of the poly V-belt for the crankshaft should coincide with the edge of the mark "0".

The fixing holes in the intake camshaft gear with the valve timing adjuster and in the exhaust camshaft gear must be aligned with the gauge holes in the camshaft bearing housing "arrows".

Instructions: If the fixing holes are on opposite sides, the crankshaft must be turned one more revolution.

Lock the camshafts using the locking pins "T10074". Locking pin "A" must be inserted through the locking hole of the intake camshaft gear into the calibration hole on the camshaft bearing housing. Locking pin "B" must be inserted through the locking hole of the exhaust camshaft gear into the calibration hole on the camshaft bearing housing.

Install the "T10110" locking flange on the gearbox side of the camshaft bearing housing for the intake camshaft as follows:; the pin "arrow" of the fixing flange "T10110" must enter the small hole of the thrust bearing of the intake camshaft. The journals "1" of the intake camshaft must enter the recess "2" of the fixing flange "T10110".

Turn the intake camshaft as far as it will go against the direction of engine rotation using the hexagon of the T10110 locking flange and hold it there. When the valve timing is set correctly, the "arrow" holes in the T10110 locking flange should be aligned with the threaded holes in the camshaft bearing housing.